WO2019215138A1 - Procédé pour faire fonctionner une installation de relevage d'eaux usées - Google Patents

Procédé pour faire fonctionner une installation de relevage d'eaux usées Download PDF

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Publication number
WO2019215138A1
WO2019215138A1 PCT/EP2019/061664 EP2019061664W WO2019215138A1 WO 2019215138 A1 WO2019215138 A1 WO 2019215138A1 EP 2019061664 W EP2019061664 W EP 2019061664W WO 2019215138 A1 WO2019215138 A1 WO 2019215138A1
Authority
WO
WIPO (PCT)
Prior art keywords
wastewater
connecting line
line
flap
pivoting flap
Prior art date
Application number
PCT/EP2019/061664
Other languages
German (de)
English (en)
Inventor
Michael Becker
Jürgen GEINITZ
Thomas Pensler
Original Assignee
KSB SE & Co. KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KSB SE & Co. KGaA filed Critical KSB SE & Co. KGaA
Priority to CN201980030963.7A priority Critical patent/CN112041515B/zh
Priority to EP19724134.2A priority patent/EP3791029B1/fr
Priority to HRP20230097TT priority patent/HRP20230097T1/hr
Priority to SI201930463T priority patent/SI3791029T1/sl
Priority to US17/053,457 priority patent/US20210246646A1/en
Publication of WO2019215138A1 publication Critical patent/WO2019215138A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/122—Pipe-line systems for waste water in building
    • E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
    • E03C1/1227—Arrangements of devices in domestic waste water pipe-line systems of pumps for facilitating drawing off
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/029—Stopping of pumps, or operating valves, on occurrence of unwanted conditions for pumps operating in parallel

Definitions

  • the invention relates to a Vetfahien for operating a sewage lifting plant, after which wastewater contaminated with wastewater is passed through a bulk material collecting container with at least one arranged in its interior separation sieve, then further retained in the wastewater feed the blocking substances in the bulk material collecting container and prepurified wastewater via a connecting line a pump and finally a liquid collecting container is fed, and then the pre-treated wastewater on the one hand via the pump and on the other hand via a connected to the connecting line bypass line in the liquid collecting container arrived.
  • Sewage lifting plants are generally used to raise inflowing wastewater to a certain level, for example for further treatment in a wastewater treatment plant. Since the wastewater is contaminated with more or less large bulking agents or solids, it has initially been used in the past, large pumps, however, in terms of cost and efficiency can not convince. For this reason, the bulky waste collection tank upstream of the pump ensures that the waste materials are retained in the interior by means of the separation sieve. As a result, only pre-purified wastewater reaches the pump and is stored in the liquid collecting container. When sewage lifting or subsequent to the wastewater inlet pumping the pre-treated wastewater from the liquid collecting container through the bulk material collecting container with the help of the pump is pushed. In this process, the solids initially retained with the aid of the separating sieve are released from this and transported away via a pressure line. The basic operation of such a wastewater lifting plant is described in EP 1 108 822 B1.
  • a filter device is initially provided outside the liquid collecting container.
  • the filter device is arranged in a filter box provided with a closable opening in front of the pump.
  • a filling bypass is connected to the filter box, through which the liquid collecting container can be filled.
  • the pre-treated wastewater passes through the pump in the liquid collecting container.
  • the filling bypass is open.
  • the filling bypass is blocked during the emptying of the liquid collecting container, ie during the pumping process.
  • the known filling bypass is formed at its upper end and in the filter boxes opening end as a funnel.
  • a shut-off device through which the filling bypass is opened during the filling of the liquid collecting container and shut off during the emptying of the liquid collecting container.
  • the obturator is a light floatable ball, which abuts due to their Auftnebs at a boundary at the upper end of the funnel.
  • Such a ball as obturator is disadvantageous, as, for example, in the prepurified wastewater unchanged located smaller solids or barrier materials can lead to problems during the closing process. In addition, often caking, calcification, etc. are observed, which also put the functionality in question. If in the context of EP 1 108 822 81 also with a local bypass in shape a derivative is worked parallel to the connecting line, already missing a shut-off.
  • a bypass line with associated obturator is also described in general in FR 752 942.
  • the bypass line is connected in front of an associated pump to the connecting line to the liquid collecting container.
  • a butterfly valve is provided in the bypass line.
  • the invention is based on the technical problem of further developing such a method for operating a wastewater lifting plant so that a functionally reliable operation is ensured taking into account a structurally simple construction.
  • a generic method for operating a sewage lifting plant in the invention is characterized in that a pivoting flap is provided in the connecting line, which closes the connecting line to a flushing cross section at wastewater inlet and opens the bypass line and the pumping line connecting line opens and the bypass line closes.
  • a pivoting flap is provided in the connecting line, which closes the connecting line to a flushing cross section at wastewater inlet and opens the bypass line and the pumping line connecting line opens and the bypass line closes.
  • the design can be made so that the separating screen via a closable opening in the bulk material collection container optionally used in the bulk material collection container and from this again, for example, for cleaning purposes or for replacement can be removed. Moreover, if then still the bulk material collecting container and the pump are arranged outside the liquid collecting container, a total easy to clean and maintain wastewater lifting plant is provided.
  • the invention uses as obturator a pivoting flap in the connecting line.
  • the pivoting flap does not completely close the connecting line in the waste water supply or in the wastewater inlet, but up to a flushing cross section. That is, generally at the edge of the pivoting flap, the flushing cross section is defined, which is automatically determined by a distance between the (closed)
  • This flushing cross-section ensures, on the one hand, that the pivoting flap is flushed around at the edges, at least in the case of the wastewater feed, so that caking, calcifications, etc., can practically not stick to this point.
  • a small proportion of the total wastewater flow flowing in at the wastewater feed is led through the flushing cross section through the pump connected to the connecting line.
  • the pump is also flushed with the aid of the pre-treated wastewater passed through at the waste water inlet.
  • a supply line coupling the pump to the bulk material collecting tank.
  • the supply line at the waste water inlet ensures that the main part of the wastewater flow is transferred directly and bypassing the pump via the bypass line into the liquid collecting tank.
  • the wastewater stream connected to the wastewater feed can be significantly increased compared with the prior art, for example according to EP 1 108 822 B1, because here the wastewater stream must all be passed through the local pump until it reaches the liquid collecting tank.
  • EP 2 581 508 B1 an increase in the wastewater flow in the wastewater feed is possible, because in this case the inserted ball leaves free an annular space through which sheet metal rods protrude, which act as a boundary for the ball.
  • flushing cross section in the invention between the outer edge of the pivoting flap and the inner wall of the connecting line in this area with the pivoting flap closed is completely free of attachments, so that the flushing flow passed through the flushing cross-section passes unhindered into the pump and through the Pump can flow all the way to the liquid collecting container. Any impurities still present in the prepurified wastewater can not settle in the flushing cross section.
  • the design is also and advantageously designed in such a way that the wastewater stream previously described and connected to the wastewater feed and a pump flow connected to the pumping process are essentially of equal size.
  • This design rule means that, for example, a volume deviation within a predetermined time, which is less than 20%, is observed between the waste water flow and the pump flow.
  • the wastewater flow connected to the sewage inlet can amount to 10 l / s.
  • a pumping current of about 11-12 l / s is observed, so that the wastewater flow and the pumping flow are substantially equal in size, if we herewith volume deviations within the given time, in this case one second, of less than 20% as a scale invests.
  • the volume deviation is measured to a maximum of 20% (12 l / s to 10 l / s).
  • the pumping current is more or less fixed, which, in terms of the pumped pumping quantity, slightly exceeds the wastewater flow as described.
  • the waste water flow which is essentially the same size, can now be set up by the geometric design of the connecting line as well as the bypass line in conjunction with the pivoting flap and the flushing flow prescribed thereby, so that only a volume deviation of less than 20% is observed with respect to the pumping flow becomes.
  • This design rule ensures that so far in the State of the art and in practice often observed pressure fluctuations o "beats" within the liquid collecting container are almost completely avoided.
  • the design is usually made such that the wastewater lifting plant according to the invention is equipped with two bulk material collecting containers and two associated pumps which are each connected to the liquid collecting container.
  • the wastewater flow and the pumping flow are essentially the same in accordance with the invention, taking into account the criteria given above, a fluid level within the fluid collecting container remains substantially the same or is subject to only slight fluctuations.
  • the pivoting flap is connected via a foot-side joint to a flange of the bypass line and / or a flange of kausieitung and / or a flange of a valve body.
  • the pivoting flap is connected to the flange of the flap nozzle.
  • the damper in question can be used advantageously as a 3-way connection in the connecting line.
  • this allows the bypass line to be connected via a branch of the Kiappen spigot and coupled to the branch.
  • the flap nozzle including the pivoting flap therein operates advantageously in the manner of a 3-way valve. When the waste water inlet, the pivoting flap ensures that the connecting line is closed except for the flushing cross section.
  • the bypass line is open.
  • the connecting line is opened (completely) and the bypass line is (completely) closed.
  • the pivoting flap is tilted as a rule at the wastewater inlet in the connecting line.
  • the inclination of the pivoting flap at the wastewater inlet is generally approx.
  • the inclined pivoting flap closes with the horizontal an angle in the range of about 10 ° to 30 °. Due to the inclination, the previously discussed flushing cross section between the edge of the (closed) pivoting flap and the inner wall of the connecting line or the inner wall of the flap nozzle is automatically made available. Furthermore, the oblique position ensures that the pivoting flap swings up immediately during a subsequent pumping operation can be observed and not any caking by deposits. Because the pivoting flap is usually limited by means of at least one stop in terms of their inclination. The stopper is generally provided inside the valve body or generally within the connection conduit. Of course, the stop is designed so that remains the already repeatedly discussed purging cross-section at the wastewater inlet and in the closed position of the pivoting flap.
  • the connecting line has a bulge which predetermines the flushing cross-section in the region of the pivoting flap which is closed during the wastewater inlet. Since the pivoting flap is generally arranged in the interior of the flap nozzle, the flap nozzle in question is closed with the flushing cross section predetermining bulge in the area of the wastewater inlet Swing flap regularly equipped. Either way, the flap nozzle, including the pivoting flap therein, generally operates in the manner of a 3-way valve, as previously described in detail.
  • shut-off flap is recirculated and the pump in the inlet direction behind it as well as a supply line to the liquid collecting container are flushed through.
  • the pivoting flap in a subsequent pumping operation by the flowing against them and funded by means of the pump pre-treated wastewater can be wasted directly so that the connecting line is opened and the bypass line is closed.
  • Fig. 1 is a wastewater lifting plant according to the invention and their operation in one
  • FIG. 2 shows the article according to FIG. 1 as a detail in the region of the flap nozzle in the case of a wastewater feed
  • Fig. 3 shows the article of FIG. 2 during the pumping process
  • Fig. 4 the flap nozzle in section in a detailed view.
  • a wastewater lifting plant is shown. This firstly has an inlet 1 for wastewater, which transfers the wastewater in the exemplary embodiment in each case into two bulk material collecting containers 4 via an inlet distributor 2 and a feed line 3.
  • the wastewater lifting plant is designed symmetrically and has two bulk material collecting tanks 4 and additionally two discharges or connecting pipes 5, via which the wastewater pre-cleaned with the aid of the bulk material collecting tanks 4 passes into an associated pump 6.
  • the bulk material collection container 4 or, the two bulk material collection container 4 each ensure that the total of the inlet 1 and the inlet manifold 2 incoming and loaded with solids wastewater is released from the barrier substances or solids in the associated bulk material collection container 4 remain.
  • the wastewater pre-cleaned in this way then passes via the outlet 5 or connecting line into the pump 6 or via a bypass 7 directly into a liquid.
  • the pre-purified wastewater flowing through the respective pump 6 also passes through a feed line 9 into the liquid collecting container 8.
  • the inflow of the waste water corresponds.
  • the pre-cleaned wastewater from the liquid collecting container 8 is now sucked in each case by the pump 6 via the supply line 9 and pressed into the bulky substance collecting container 4 through the discharge line or connecting line 5.
  • the pre-cleaned wastewater takes with the retained in the bulk material collecting tank 4 solids and transferred to the wastewater via a pressure line 11 to another plant or generally further treatment. In this way, who the dissolved in the subsequent pumping the blocking substances from the bulk material collecting container 4 and flushed virtually without resistance in the pressure line 11.
  • both the pump 6 and the respective bulk substance collecting container 4 in conjunction with the discharge line or connecting line 5, the supply line 9 and finally the bypass line 7 are arranged entirely outside the liquid collecting container 8 and thus easily accessible.
  • the bulk material collecting container 4 which according to the exemplary embodiment has an opening, which is not shown in detail in FIG. 1, and which can be closed.
  • the separating sieve present in the interior of the bulky substance collecting container 4 and not expressly shown can be removed and replaced. As a result, maintenance work can be carried out on the separating screen or a replacement can be realized.
  • pivoting flap 12 is provided according to the exemplary embodiment in the connecting line 5. In fact, there is the pivoting flap 12 inside a valve body 13.
  • the valve body 13 including the pivoting flap 12 therein operates in the manner of a 3-way valve as will be explained in more detail below.
  • the flap pipe 13 is used as a 3-way nozzle in the connecting line 5. About a branch of the flap pipe 13 is coupled to the bypass line 7.
  • the pivoting flap 12 in the connecting line 5 or in the flap nozzle 13 inserted into the connecting line 5 closes the connecting line 5 in the case of the wastewater inlet shown in FIG. 2 except for a flushing cross section 14.
  • This flushing cross section 14 adjusts itself as an annular space or annular cross section in that the pivoting flap 12 is spaced apart in the closed state shown in FIG. 2 in comparison to the inner wall of the flap nozzle 13.
  • the connection line 5 or provided in the connecting line 5 flap nozzle 13 has a purge cross section 14 predetermined bulge 15 in the closed at wastewater inlet pivot flap 12. That is, between the inner wall of the bulge 15 and the outer edge of the pivoting flap 12 in the closed Condition as shown in FIG. 2 and the sewage inlet is an arcuate annular space, the total sets the purge section 14 and de fined.
  • the pre-treated waste water sucked from the liquid collecting container 8 by means of the pump 6 via the supply line 9 ensures that the pivoting flap 12 is transferred into the position according to FIG.
  • the pumping process ensures that the connecting line 5 or the valve stub 13 which is looped into the connecting line 5 is opened and, in contrast, the bypass line 7 with the aid of the pivoting flap
  • the pre-treated wastewater undergoes a closure. This is necessary so that the pre-treated wastewater is not returned to the liquid Sammelbehaltei 8 via the bypass line 7, son countries completely flows through the bulk material collecting container 4 during the pumping process. As a result, the pre-treated wastewater can dissolve the solids retained in the bulk material receiver 4 from the separation screen and flush the waste water into the pressure line 11.
  • the pivoting flap 12 is connected via a foot-side joint 16 in the exemplary embodiment to a flange of the flap neck 13. Consequently, the flapper neck can
  • the questionable valve body 13 with the hinged flap 12 arranged therein as a finished built-in module is installed in the connecting line 5 and connected to the bypass line 7 as shown.
  • the questionable valve body 13 can be easily removed if necessary and clean for example.
  • the pivoting flap 12 is not limited to one which can have a metallic core and an outer plastic surround, as shown in FIG. 4.
  • the foot-side hinge 16 in this connection ensures that the butterfly valve 12 can assume the positions shown in the comparison of FIGS. 2 and 3 without difficulty and without wear.
  • the shut-off flap or pivoting flap 12 is tilted in the connecting line 5 in the wastewater feed shown in FIG.
  • An angle a of the oblique position observed in relation to a horizontal H indicated in FIG. 2 is measured to values of approximately 10 ° to 30 °.
  • the pivoting flap 12 is limited in terms of its inclination with the aid of at least one stop.
  • the stop may be an inner wall-side support ring for the pivoting flap 12 provided in the flap neck 13, as shown particularly in FIG. 4.
  • This support ring is realized in the region or subsequent to the bulge 15.
  • the support ring in conjunction with a nose-like projection on the underside of the pivoting flap 12, has a total of the flushing cross section 14.
  • other stops are conceivable as long as the flushing cross section 14 required by the wastewater inlet remains.
  • the design is such that a waste water stream connected to the waste water feed and a pump flow connected to the pumping process are essentially of equal size. That is, the volume of inflowing wastewater at the wastewater inlet and the volume of the pumped pre-treated wastewater during the pumping process correspond largely. In the present case, this means that deviations of less than 20% are observed between the two addressed and comparable volumes within a predetermined same time, as has already been described in the introduction. This can be easily achieved and adjusted by the appropriate choice of the geometry of the connecting line 5, the by-pass line 7, the pump 6 and the valve body 13 and the pivoting flap 12 as well as by selecting the pump 6 with a corresponding flow area. As a result, virtually no pressure peaks are observed in the interior of the liquid collecting container 8 according to the invention, as in the prior art, so that its mechanical stability is permanently increased

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Filtration Of Liquid (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Water Treatment By Sorption (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner une installation de relevage d'eaux usées, selon lequel les eaux usées chargées de matières bloquantes sont guidées à travers un récipient collecteur de matières bloquantes (4) pourvu d'au moins un tamis de séparation disposé à l'intérieur de celui-ci, selon lequel, en outre, à l'arrivée des eaux usées, les matières bloquantes sont ramenées dans le récipient collecteur de matières bloquantes (4) et les eaux usées pré-nettoyées sont amenées à une pompe (6) par l'intermédiaire d'une conduite de liaison (5), et selon lequel les eaux usées pré-nettoyées parviennent d'une part par l"intermédiaire de la pompe (6) et d'autre part par l'intermédiaire d'une conduite de dérivation (7) raccordée à la conduite de liaison (5) dans le récipient collecteur de liquide (8). Selon l'invention, un clapet pivotant (12) est situé en plus dans la conduite de liaison (5), lequel, à l'arrivée des eaux usées, ferme la conduite de liaison (5) jusqu'à une section de rinçage (14) et ouvre la conduite de dérivation (7) et, lors du processus de pompage, ouvre la conduite de liaison (5) et ferme la conduite de dérivation (7).
PCT/EP2019/061664 2018-05-09 2019-05-07 Procédé pour faire fonctionner une installation de relevage d'eaux usées WO2019215138A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201980030963.7A CN112041515B (zh) 2018-05-09 2019-05-07 用于运行废水提升设备的方法
EP19724134.2A EP3791029B1 (fr) 2018-05-09 2019-05-07 Procédé pour faire fonctionner une installation de relevage d'eaux usées
HRP20230097TT HRP20230097T1 (hr) 2018-05-09 2019-05-07 Način rada kanalizacijskog crpnog sustava
SI201930463T SI3791029T1 (sl) 2018-05-09 2019-05-07 Postopek za delovanje sistema za prečrpavanje odpadne vode
US17/053,457 US20210246646A1 (en) 2018-05-09 2019-05-07 Method for Operating a Wastewater-Lifting System

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018207257.4A DE102018207257A1 (de) 2018-05-09 2018-05-09 Verfahren zum Betrieb einer Abwasserhebeanlage
DE102018207257.4 2018-05-09

Publications (1)

Publication Number Publication Date
WO2019215138A1 true WO2019215138A1 (fr) 2019-11-14

Family

ID=66542225

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/061664 WO2019215138A1 (fr) 2018-05-09 2019-05-07 Procédé pour faire fonctionner une installation de relevage d'eaux usées

Country Status (7)

Country Link
US (1) US20210246646A1 (fr)
EP (1) EP3791029B1 (fr)
CN (1) CN112041515B (fr)
DE (1) DE102018207257A1 (fr)
HR (1) HRP20230097T1 (fr)
SI (1) SI3791029T1 (fr)
WO (1) WO2019215138A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR752942A (fr) 1932-07-12 1933-10-03 Pompes Et Compresseurs Baudot Installation de pompage des eaux chargées d'impuretés
DE3333883A1 (de) * 1983-09-20 1985-03-28 Willi 4973 Vlotho Cordes Behaelter fuer eine abwasser-pumpstation
DE19543123C1 (de) * 1995-11-18 1997-05-15 Strate Maschf Abwasserhebeanlage
EP1108822A1 (fr) 1999-12-17 2001-06-20 Michael Becker Installation de levage des eaux usées
EP2581508A1 (fr) 2011-10-12 2013-04-17 STRATE Technologie für Abwasser GmbH Installation de relèvement des eaux usées
EP3130710A1 (fr) * 2015-08-12 2017-02-15 Wilo Se Récipient de collecte d'eaux usées pour une installation de relèvement d'eaux usées et installation de relèvement d'eaux usées

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029765A (en) * 1934-04-07 1936-02-04 Chicago Pump Co Pumping apparatus
US3015279A (en) * 1958-09-26 1962-01-02 Fmc Corp By-pass for pumping apparatus
DE3607353A1 (de) * 1986-03-06 1987-09-10 Strate Maschf Abwasserhebewerk
DE102005060556A1 (de) * 2005-12-17 2007-08-16 Ksb Aktiengesellschaft Abwasserhebeanlage
DE102013221065A1 (de) * 2013-10-17 2015-04-23 Ksb Aktiengesellschaft Verfahren zum Erstellen einer Abwasserhebeanlage in einem Abwasserschacht sowie zugehörige Abwasserhebeanlage
DE102014109658A1 (de) * 2014-07-10 2016-01-14 STRATE Technologie für Abwasser GmbH Siebvorrichtung für eine Abwasserhebeanlage
DE102015010509A1 (de) * 2015-08-12 2017-02-16 Wilo Se Abwassersammelbehälter für eine Abwasserhebeanlage

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR752942A (fr) 1932-07-12 1933-10-03 Pompes Et Compresseurs Baudot Installation de pompage des eaux chargées d'impuretés
DE3333883A1 (de) * 1983-09-20 1985-03-28 Willi 4973 Vlotho Cordes Behaelter fuer eine abwasser-pumpstation
DE19543123C1 (de) * 1995-11-18 1997-05-15 Strate Maschf Abwasserhebeanlage
EP1108822A1 (fr) 1999-12-17 2001-06-20 Michael Becker Installation de levage des eaux usées
EP1108822B1 (fr) * 1999-12-17 2002-10-23 Michael Becker Installation de levage des eaux usées
EP2581508A1 (fr) 2011-10-12 2013-04-17 STRATE Technologie für Abwasser GmbH Installation de relèvement des eaux usées
EP2581508B1 (fr) * 2011-10-12 2014-03-19 STRATE Technologie für Abwasser GmbH Installation de relèvement des eaux usées
EP3130710A1 (fr) * 2015-08-12 2017-02-15 Wilo Se Récipient de collecte d'eaux usées pour une installation de relèvement d'eaux usées et installation de relèvement d'eaux usées

Also Published As

Publication number Publication date
SI3791029T1 (sl) 2023-04-28
DE102018207257A1 (de) 2019-11-14
CN112041515B (zh) 2023-01-31
US20210246646A1 (en) 2021-08-12
EP3791029B1 (fr) 2022-11-23
HRP20230097T1 (hr) 2023-03-17
EP3791029A1 (fr) 2021-03-17
CN112041515A (zh) 2020-12-04

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